diff options
| author | Antonio Quartulli <antonio@meshcoding.com> | 2014-02-15 02:17:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-06 22:06:16 -0800 |
| commit | 3bf167762750638933cfbca080e46fdc00374b11 (patch) | |
| tree | 2a4797603405a5f3b7d699a7d6b784e0f21c4593 /net | |
| parent | d74be7ef96bd38e40a3b19f431fc0e696249bed8 (diff) | |
batman-adv: avoid double free when orig_node initialization fails
[ Upstream commit a5a5cb8cab526af2f6cbe9715f8ca843192f0d81 ]
In the failure path of the orig_node initialization routine
the orig_node->bat_iv.bcast_own field is free'd twice: first
in batadv_iv_ogm_orig_get() and then later in
batadv_orig_node_free_rcu().
Fix it by removing the kfree in batadv_iv_ogm_orig_get().
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/batman-adv/bat_iv_ogm.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 65e0d327732d..f7270b9e25c7 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -243,18 +243,16 @@ batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const uint8_t *addr) size = bat_priv->num_ifaces * sizeof(uint8_t); orig_node->bat_iv.bcast_own_sum = kzalloc(size, GFP_ATOMIC); if (!orig_node->bat_iv.bcast_own_sum) - goto free_bcast_own; + goto free_orig_node; hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, batadv_choose_orig, orig_node, &orig_node->hash_entry); if (hash_added != 0) - goto free_bcast_own; + goto free_orig_node; return orig_node; -free_bcast_own: - kfree(orig_node->bat_iv.bcast_own); free_orig_node: /* free twice, as batadv_orig_node_new sets refcount to 2 */ batadv_orig_node_free_ref(orig_node); |